65775930 has 32 divisors (see below), whose sum is σ = 172214208. Its totient is φ = 15945600.

The previous prime is 65775911. The next prime is 65775949. The reversal of 65775930 is 3957756.

It is an interprime number because it is at equal distance from previous prime (65775911) and next prime (65775949).

It is a super-3 number, since 3×65775930³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99331 + ... + 99990.

It is an arithmetic number, because the mean of its divisors is an integer number (5381694).

Almost surely, 2^65775930 is an apocalyptic number.

65775930 is an abundant number, since it is smaller than the sum of its proper divisors (106438278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65775930 is a wasteful number, since it uses less digits than its factorization.

65775930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199342.

The product of its (nonzero) digits is 198450, while the sum is 42.

The square root of 65775930 is about 8110.2361247993. The cubic root of 65775930 is about 403.6661498723. Note that the first 3 decimals are identical.

The spelling of 65775930 in words is "sixty-five million, seven hundred seventy-five thousand, nine hundred thirty".